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Clapham · SW4, SW11, SW9, SW12

Leak Detection in Clapham

Non-destructive water leak detection across Clapham, tracing hidden leaks with thermal imaging, acoustic sensors and tracer gas, then drying and treating the damage before it becomes mould.

Call 020 3051 8478Report a leak
★★★★★ 4.9 from 18 Google reviews · trusted by Clapham homeowners, landlords & property managers
Quick answer: If you have a suspected water leak at a property in Clapham, our specialists trace the source without tearing the place apart, using thermal, acoustic and tracer-gas methods. A leak is not over when the water stops. Mould can start within 48 hours, so we find the source, dry the structure and treat any mould, all with one company. Leak detection is £800 to £1500 depending on scale. Call 020 3051 8478.
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Leak to dry to treated, one company in Clapham

Clapham's housing runs from grand Georgian and Victorian terraces around the Old Town and the Common to dense Victorian conversions split into flats, mansion blocks, and postwar and modern developments near Clapham North and Clapham Junction. This mix of shared pipework, old soil stacks, flat-roofed rear extensions and multi-storey conversions creates plenty of hidden spots where water can escape unnoticed for months.

Leak Detection

Trace hidden water leaks without unnecessary damage using thermal, acoustic and tracer-gas methods. Leak detection →

Structural Drying

Dry walls, floors and voids after a leak or flood with monitored dehumidifiers, to completion. Structural drying →

Mould Treatment

Treat and prevent the mould that follows water damage, dealing with the moisture source first. Mould treatment →

Damp Investigation

Tell rising damp, penetrating damp and condensation apart, so the right repair is done once. Damp investigation →

Areas of Clapham we cover

We attend leaks right across Clapham and its neighbourhoods, including:

Common leaks in Clapham homes

Converted terraces with shared pipework

Many Clapham streets around Abbeville Village and the Old Town are lined with Victorian terraces split into two or three flats. Plumbing runs between separate leaseholds, so a failed joint or corroded pipe under one kitchen can travel through floor voids and ceilings, showing up as a stain a flat below rather than at its actual source, delaying discovery.

Flat roofs on extensions and mansion blocks

Rear kitchen extensions and the flat-roofed mansion blocks common around Clapham Park and Clapham North rely on felt or GRP coverings that degrade with age and weather. Once the membrane perishes or a junction with a parapet or upstand fails, rainwater tracks along joists and insulation before appearing as damp patches well away from the original point of entry.

Loft and ensuite bathrooms leaking downward

Loft conversions and additional ensuites, popular in Clapham's family houses near the Common, put new bathrooms directly above existing living space. Perished shower tray seals, grouting or waste pipe joints let water seep through floorboards and ceiling plasterboard into the room below, often mistaken for a roof leak until the actual bathroom fitting is traced and inspected.

What our customers say

★★★★★

Omg what brilliant service, excellent the cleaner did a very good job was efficient he took his time and cleaned everything, highly recommend S. Bessim…

Susan Bessim, via Google

★★★★★

Amazing company! They responding very quickly. They have a low prices as well, not crazy quotes like from others. Job has been done very quickly and team was very professional. I will use them in the future if I needed. Thanks!

Patryk Gutowski, via Google

★★★★★

Really impressed with the whole experience. The surveyor did a proper, thorough job and didn't rush anything, they got to the root cause of the damp and explained it all clearly. Detailed, professional and reassuring from start to finish. Couldn't recommend them more highly.

Keiryn Raf, via Google

Tip: If your water meter ticks over with every tap off, or a wall or ceiling stays damp with no obvious cause, there is a hidden leak. Finding it early is far cheaper than repairing the mould and damage it leaves behind.

Suspect a leak in Clapham?

Call 020 3051 8478 or report a leak online. We trace, dry and treat for homeowners, landlords and managing agents across Clapham.

Frequently asked questions

How much does leak detection in Clapham cost?
Leak detection is £800 to £1500 depending on the scale and access. You get a written, insurance-ready report identifying the source.
Will you damage my home finding the leak?
No. We use non-destructive thermal imaging, acoustic sensors and tracer gas to pinpoint the leak before any access is opened up, so repairs are targeted.
Do you fix the damage after finding the leak?
Yes. A leak is not over when the water stops. We dry the structure with monitored dehumidifiers and treat any mould, so it is handled end to end.
Do you provide reports for insurance claims?
Yes. Every leak investigation comes with a clear written report including the cause, photographic evidence and recommendations, formatted for insurers and managing agents.